Retrieving descriptive phrases from large amounts of free text
Proceedings of the ninth international conference on Information and knowledge management
The TREC question answering track
Natural Language Engineering
Unsupervised learning of soft patterns for generating definitions from online news
Proceedings of the 13th international conference on World Wide Web
The kappa statistic: a second look
Computational Linguistics
Evaluation of an extraction-based approach to answering definitional questions
Proceedings of the 27th annual international ACM SIGIR conference on Research and development in information retrieval
Ranking definitions with supervised learning methods
WWW '05 Special interest tracks and posters of the 14th international conference on World Wide Web
Answering what-is questions by Virtual Annotation
HLT '01 Proceedings of the first international conference on Human language technology research
Large scale testing of a descriptive phrase finder
HLT '01 Proceedings of the first international conference on Human language technology research
Evaluating answers to definition questions
NAACL-Short '03 Proceedings of the 2003 Conference of the North American Chapter of the Association for Computational Linguistics on Human Language Technology: companion volume of the Proceedings of HLT-NAACL 2003--short papers - Volume 2
Generic soft pattern models for definitional question answering
Proceedings of the 28th annual international ACM SIGIR conference on Research and development in information retrieval
A Definitional Question Answering System Based on Phrase Extraction Using Syntactic Patterns
IEICE - Transactions on Information and Systems
Learning to identify single-snippet answers to definition questions
COLING '04 Proceedings of the 20th international conference on Computational Linguistics
HLT '05 Proceedings of the conference on Human Language Technology and Empirical Methods in Natural Language Processing
Soft pattern matching models for definitional question answering
ACM Transactions on Information Systems (TOIS)
An open-source natural language generator for OWL ontologies and its use in Protégé and Second Life
EACL '09 Proceedings of the 12th Conference of the European Chapter of the Association for Computational Linguistics: Demonstrations Session
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We present a system that finds short definitions of terms on Web pages. It employs a Maximum Entropy classifier, but it is trained on automatically generated examples; hence, it is in effect unsupervised. We use rouge-w to generate training examples from encyclopedias and Web snippets, a method that outperforms an alternative centroid-based one. After training, our system can be used to find definitions of terms that are not covered by encyclopedias. The system outperforms a comparable publicly available system, as well as a previously published form of our system.